DE345453C - - Google Patents

Info

Publication number
DE345453C
DE345453C DENDAT345453D DE345453DA DE345453C DE 345453 C DE345453 C DE 345453C DE NDAT345453 D DENDAT345453 D DE NDAT345453D DE 345453D A DE345453D A DE 345453DA DE 345453 C DE345453 C DE 345453C
Authority
DE
Germany
Prior art keywords
tuning fork
receiver
sound
box
plane
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
DENDAT345453D
Other languages
German (de)
English (en)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Publication of DE345453C publication Critical patent/DE345453C/de
Active legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
    • G01S1/72—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using ultrasonic, sonic or infrasonic waves

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Transducers For Ultrasonic Waves (AREA)
DENDAT345453D 1919-02-07 Active DE345453C (cs)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB299019A GB144345A (en) 1919-02-07 1919-02-07 Receiving or collecting devices or mechanism for sound waves or vibrations

Publications (1)

Publication Number Publication Date
DE345453C true DE345453C (cs)

Family

ID=9749822

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT345453D Active DE345453C (cs) 1919-02-07

Country Status (2)

Country Link
DE (1) DE345453C (cs)
GB (1) GB144345A (cs)

Also Published As

Publication number Publication date
GB144345A (en) 1920-06-07

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